Google activates first space data center satellite to run AI in orbit

What's Happening

• Google activated its Suncatcher prototype space data center after launching it on a SpaceX Falcon 9 rocket.
• The satellite carries four Google Tensor Processing Units and generates up to 1 kilowatt of electricity.
• Engineers prompted the onboard Gemma 4 model to write a haiku about space and report on orbital conditions.
• Power constraints limit the spacecraft to turning one chip on for about twenty minutes at a time.

Why It Matters

Moving AI inference to orbit reduces latency for space-based applications and tests the viability of off-planet computing infrastructure. Success here opens the door to distributed satellite networks handling massive workloads without relying on ground communication.

The Context

• Cosmic radiation causes bit flips in computer memory, corrupting data without triggering typical monitoring tools.
• Ground simulations indicated radiation poses more of a problem for training a model than for inference workloads.
• Google's Starcloud project aims to build high-speed links between the satellites to support distributed computing.

What They're Saying

• A Google spokesperson told TechCrunch the satellite is operating nominally following a three-week commissioning process.

What to Watch

• Google plans on launching two more satellites in 2027 with higher power generation and inter-satellite optical links.
• The current test campaign will measure how the chips perform under thermal stress and in the space radiation environment.

The Bottom Line

Google's orbital TPU test marks the first step toward building interconnected data centers in space.